EXTECH PH115 ExStik Replacement Refillable Ph Electrode Module

Replacement flat surface electrode for ExStik

Easy to clean, rugged flat surface Refillable pH electrode
Interchangeable with ExStik® Chlorine or ORP meters
Provides an economical way to refill your electrode
Eliminates the problem of limited electrode shelf life, contamination, and usage life
Complete with protective connector cap
ATC via built-in Pt-100Ohm sensor